Hi Andrew, this series simplifies the BDI code to get tid of the magic auto-unregister feature that hid a recent block layer refcounting bug. Diffstat: drivers/mtd/mtdcore.c | 1 + fs/super.c | 3 +++ include/linux/fs.h | 1 + mm/backing-dev.c | 17 +++++++---------- 4 files changed, 12 insertions(+), 10 deletions(-)